.lead__title{
  margin: 0 auto;
  max-width: 720px;
  font-style: normal;
  font-weight: 900;
  font-size: 96px;
  line-height: 100px;
  text-align: center;
  color: #FFFFFF;
}

@media screen and (max-width: 767px) {
  .lead__title{
    font-size: calc( (100vw - 320px)/(768 - 320) * (96 - 40) + 40px);
    line-height: 75px;
  }
}

@media screen and (max-width: 450px) {
  .lead__title{
    line-height: 44px;
  }
}

@media screen and (max-width: 320px) {
  .lead__title{
    font-size: 40px;
  }
}